Bearing for grinding-mills.



"sos se- PATENTED APR. 17, 1906.

- M. BENJAMIN. BEARING FOR GRINDING MILLS urmoynox. Hum 001.21.1905

2 SHBETS-SHEET 1.

yme'nto c ai -MW Exr PATENTED APR. 17, 1906.

M. BENJAMIN. v BEARING FOR GRINDING MILLS.

APPLICATION FILEDOOT. 21. 1M5.

2 SKEETB-SHEET 2.

UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

Patented April 17, 1906 Application filed October 21,1905. -erial No. 283.801.

To all whom, it may 007210077 'Be it known that I, MoRRfs BENJAMIN, a citizen of the United States, residing at Atlanta, in the county of Fulton and tate of Georgia, have invented certain new and useful Improvements in Bearingsfor Grinding- Mills, of which the following is aspecification.

In certain classes of shaft and spindle bearings where the spindle is vertical it has been found diflicult to prevent the downward escape of the lubricant ,which is not only wasted but in some cases injures the work or material below the bearing; and the object of my invention is to prevent such results, to which end I construct the hearing as fully set forth hereinafter and as illustrated in the accompanying drawings, in which- Flgure 1 is a sectional elevation showing my improved shaft-bearing in connection with a grinding-mill. Fi 2 is an enlarged section of the bearing itsel The bearing is provided with a shell or box A, within which is the brass or sleeve B, having a flange 1., resting on a shoulder 2 of the box, and the upper portion of the box is formed to constitute a receptacle 4 for a suitable lubricant.

The shaft C turns in the sleeve B and has a head 5,v which rests upon the flange 1, the shaftextendin through the sleeve and below the box an being connected at thelower end with the part or device to be operated. This art will differ accordin to the character 0 the mechanism in whic the bearing is employed, As shown, it is the roller D of a 1 grinding-mill, in which the box A is pivoted to swing upon a revolving cross-head E, supported upon a rotating shaft F. To prevent the escape of the lubricant, which may flow down between the shaft and sleeve or between the latter and the box, I extend the end of the sleeve downward, so as to be flush with the end of the box, forming annular concentric flat faces, and against these bears the upper face of an annular packing G, of rubber or other suitable material, the inner face of which bears against the exterior of the shaft C. Any suitable means is employed to force the ring G a ainst the end faces of the box and sleeve an the inner edge of the ring against the shaft, so that the jolnts between the sleeve and box and between the sleeve and shaft are eflectually sealed.

As shown, the ring G fits a socket in an annular disk H, which is ressed upward by a spring I, surrounding t e shaft and bearing at its lower end upon the shoulder of a muff or cup J, secured to the shaft, the u per edge of the muff extending into an annu ar recess 6 of thebox, so as to aid in excluding dust and dirt.

It is essential that the packing rotate with the shaft, to which end it is seated in the disk H, and the latter has notches or bearin s 7 adapted to contact with projections 8 o the cup J, so that the cup, shaft, and packing turn together. Where, as is common, the packing is stationary, the packingg'and shaft cuts the latter, so that it is diflicult to maintain the sealing of the joint and to hold the packing in place. improved construction there is no cutting of the shaft and the packing always presses With the 'rit between the closely against the oints. 1

One means of securing the cup to the shaft is a sectional or split collar K, fitting externally a conical socket in the hub 9 of the cup, suitably bolted to the shaft, and with a vertical recess 10, receiving the ends of setscrews 12 12, passing through the side of the hub, so that the cup is compelled to rotate with the collar and shaft.

Near the bottom of the cu is an opening provided with a plug 13. T e cup will receive any lubricant which may by any accident leak past the joints, and by removing the plug the contents .of the cup can be withdrawn.

WVithout limiting myself to the precise construction and arrangement shown as to the application of the bearing to any particular 0 ass of machines, I claim 1. The combination in a shaft-bearing and with a shaft of a box, a sleeve receiving the shaft and supported within the box, the box and sleeve having annular concentric flush faces, an annular packing, and means for pressing the same into contact with the said aces and with the face of the shaft, substantial] y as set forth.

2. The combination in a shaft-bearing and with a shaft of a box, a sleeve receiving the shaft and supported within the box, the box and sleeve having annular concentric flush faces, an annular packing, means for pressin the same into contact with the said faces an with the face of the shaft, and means for insuring the rotation of the packing with the shaft, substantially as set forth.

3. The combination in a shaft-bearing and with a shaft of a box, a sleeve receiving the shaft and supported within the box, the box and sleeve having annular concentric flush faces, an annular packing, a socketed disk carrying the packing, and means connecting the disk to turn with the shaft while permitting the disk to slide independently of the shaft, substantially asset forth.

- 4. The combination in a shaft-bearing and with a shaft of a box, a sleeve receiving the shaft and supported within the box, the box and sleeve having annular concentric flush faces, an annular packing, a socketed disk carrying the packing and connected to turn with the shaft, and a spring bearing against the disk and carrying the latter and the packing toward the box and sleeve, substantially as set forth.

5. The combination with the shaft, box, sleeve, and packing bearing a ainst the ends of the box and sleeve, of the i'sk sup orting the packing, a cup supported below t e disk to turn with the shaft, and a spring interposed between the cup and disk, substantially as set forth.

6. The combination with the shaft, box, sleeve, and packing bearing a ainst the ends of the box and sleeve, of the isk sup orting the packing, a cup su ported below t e disk to turn with the sha t, and a spring interposed between the cup and disk, the cup rovided with an outlet and detachable p ug, substantially as set forth.

7. The combination with the shaft, box,

sleeve, and packing bearing against the ends of the box and sleeve, of the disk supporting the packin a cu supported below the disk to turn wit the s aft, a spring interposed between the cup and disk, there being bearings on the cup and disk arranged to carry the disk rotatively with the cup while permitting the sliding of the disk, substantially as set forth.

8. The combination with the shaft, box, sleeve, and packing bearing a ainst the ends of the box and sleeve, of the disk supporting the packing, a cup supported below the disk to turn with the shaft, and a s ring interposed between the cup and disk, the box having an annular recess receiving the edge of the cup, substantially as set forth.

9. The combination with the shaft, box, sleeve, and packing bearing a ainst the ends of the box and sleeve, of the isk supporting the packing, a cup supported below the disk to turn with the shaft, and a spring inter osed between the cup and disk, the box having a socketed hub, and a conical or split collar secured to the shaft and fitting the socket of the cup-hub, substantially as set forth.

In testimony whereof I aflix my signature in presence of two witnesses.

MORRIS BENJAMIN.

Witnesses:

JAMES F. SAUNDERS, B. C. RUsT. 

